4O2 



INDEX 



Tutt, 384 

 Typhoid fever, 242 



Uhler, on distribution, 315 



Urech, 371, 372 



Uric acid, 99; as a pigment, 161 



Utricularia, 200 



Uzel, 367 



Vagina, 113, 114, "115 



Valette St. George, la, 363 



Vanessa, development of scales of, *63; head 



of butterfly, *33; antiopa, 232; photo- 



tropism, 289; atalanta, color change, 174; 



cardiii, dispersion, 300, 304; geographical 



variation, 306; polychloros, coloration, 164; 



melanism, 165; urticce, coloration, 162, 164; 



melanism, 165; temperature experiments, 



168 



Variation in coloration, 173, *i/5, *ij6 

 Variations, 174 

 Vas defer ens, *ii3, 114 

 Vayssiere, 358, 361, 369 

 Vedalia (see Navius) 

 Veins, 46 

 Velum, *2io 

 Venation, *^6 

 Ventral sinus, 101, *ii2 

 Ventral tube, 53 

 Ventriculus, 95 

 Verhoeff, 346, 349, 379 

 Verloren, 358 

 Vernon, 373 

 Verson, 364 

 Vertex, 22 



Verworn, on phototropism, 287; 381 

 Vespa, nests of, *27o; olfactory organ, *8o; 

 sensillum, *j6; taste cups, *78; tongue, 



*77 



Vespidas, 270 



Viallanes, 343, 353, 358, 361, 368 

 Vision, 86 



Vitelline membrane, *n8 

 Vitreous body, *8j 

 Voeltzkow, 366 

 Vogler, 361 



Volucella, mimicry by, *i93; predaceous, 254 

 Voss, F., 347 

 Voss, H. v., 373 



Wagner, F. .,373 



Wagner, J., 342 



Wagner, N., 363 



Wahl, 369 



Walker, 370 



Walking, 43 



Wallace, on mimicry, 186; 373, 383 



Walsh, on losses through insects, 325, 333 



Walter, on mouth parts, 33; 344 



Walton, on meron, 40; 346 



Warning coloration, 182 



Wasmann, on myrmecophilism, 279; 379, 



381, 382 

 Wasps, 270 

 Watase, 355 



Wax, glands, 66; pincers, *2io, 211 

 Webster, on dispersal, 301, 313, 316; losses 



through insects, 325; 334; 374, 375, 379, 



383, 384 

 Wedde, 344 

 Weed, on birds in relation to insects, 223, 225, 



226; 377 

 Weinland, 355 

 Weismann, imaginal buds, 149; instinct, 296; 



temperature experiments, 168; 350, 365. 



3 6 7,37o,37i, 372, 374,3 82 



Wesche, 345 



West, T, 345 



Westwood, on Brachinus, 65; 340, 341 



Wheeler, on harvesting ants, 279; Mal- 

 pighian tubes, 99; tropisms, 283, 284, 285, 

 286, 290; 348, 357, 359, 366, 380, 381 



White, F. B., 347, 3 6 9 



White grubs, 329 



Whitman, 381 



Whymper, on distribution, 300; 384 



Wielowiejski, von, 358, 359, 363, 368 



Wilcox, 364, 376 



Wilde, 356 



Will, F., on taste, 77; 354, 355 



Will, L., 363, 365 



Williams, 360, 369 



Wilson, 367 



Wings, 45; foldingof, 48, *49; modifications, 

 45; muscles, *si; vibration, 49, *5o, 82 



Wistinghausen, von, 362 



Witlaczil, 350, 357, 365, 368 



Wollaston, on beetles of Madeira Ids., 304 



Wood, T. W., 370 



Wood-Mason, 341 



Woodward, 366 



Woodworth, 346 



Worker, ant, 271; bee, *264, 269, 270; ter- 

 mite, *26o, 261; wasp, 271 



Xanthophyll, as a pigment, 160, 177 



Xenoncura, *32o 



Xiphidiitm, stridulation of, 83 



Yellow fever, 238 



Yolk, *n8, *IIQ 



Young, on luminosity, 106 



Yucca, pollination of, *205, *2o6 



ZaitJ/a, 158 

 Zander, 349 

 Zimmermann, 358 

 Zittel, von, 342 

 Zugmayer, 374 



